More than 120 firefighters were trying to extinguish a blaze at an oil depot in the Russian city of Sochi that was sparked by a Ukrainian drone attack, regional Governor Veniamin Kondratyev has said on the Telegram messaging app. In the Krasnodar region, where Sochi is located, a fuel tank with a capacity of 2,000 cubic metres was on fire, Russia's RIA news agency reported on Sunday, citing emergency officials. Rosaviatsia, Russia's civil aviation authority, said on Telegram that flights were halted at Sochi's airport to ensure air safety. The attack, which Kondratyev said was in the Adler district of...